Heidelberg University Children's Hospital 1 article published in JoVE Immunology and Infection Leukocyte Infiltration of Cremaster Muscle in Mice Assessed by Intravital Microscopy Simon Alexander Kranig*1, Trim Lajqi*1, Raphaela Tschada1, Maylis Braun1, Navina Kuss1, Johannes Pöschl1, Hannes Hudalla1 1 Here, we show how to perform intravital microscopy on post-capillary venules of the mouse cremaster muscle. Commonly applied to different models of inflammation and sepsis, particularly those induced by chemokines and cytokines, we highlight its relevance in the study of muscolopathies involving exaggerated muscular leukocyte infiltration.